Matthew Perry's sudden passing at 54 saddened the world.

Fans, co-stars, and celebs mourned his loss.

"Friends" Instagram paid a heartfelt tribute.

Maggie Wheeler praised Perry's generosity and humor.

Adele honored Perry's impactful role in "Friends."

Morgan Fairchild expressed shock and condolences.

Yvette Nicole Brown remembered Perry's kindness.

Shannen Doherty cherished their shared memories.

Ian Ziering, Valerie Bertinelli, Mira Sorvino, Selma Blair, and Rumer Willis shared their grief and memories.

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